Did they really put Wolverine on the displays at Euston? I thought the Wolverine thing was an April Fool
I can't imagine they changed any displays. But this was Virgin, and it wasn't so much an April Fool, as rather an opportunity for publicity, and of course the film company to promote a film.
Rather a lot of April Fool jokes these days are by large companies that make sure to have plenty of branding, and often come up with things that are very obviously spoofs. But, many are very amusing and deserve to be viewed and shared I suppose.
It's a long way from when newspapers or TV channels made up a story. Preparing something for April 1st is now probably an important part of any marketing campaign.